Abstract
With the salinity-alkalinity-sensitive tomato cultivar‘Zhongza No.9'as the experimental material,the effects of foliar-spraying Spd(0.25mmol·L-1)on the growth paramaters,the net photosynthetic rate(Pn)and contents of chlorophyll biosynthesis precursors in tomato seedlings grown hydroponically under 75mmol·L-1 mixed saline-alkaline solution were studied.The results showed that:(1)Under saline-alkaline stress,the contents of chlorophyll biosynthesis precursors-protoporphyrin Ⅸ(Proto Ⅸ),MgProtoporphyrin Ⅸ(Mg-ProtoⅨ),protochlorophyll(Pchl)were significantly decreased,while the contents ofδ-aminolevulinic acid(ALA),porphobilinogen(PBG),uroorphyrinogen Ⅲ(Uro Ⅲ)were significantly accumulated in leaves of tomato seedlings.It was showed that stress restrained the transformation obstruction from UroⅢ to ProtoⅨand lead to decrease in contents of Chl a,Chl b and total Chl,and reduced the Pn,leaf area,leaf relative water content,fresh and dry weight of shoot and root.(2)Under saline-alkalinestress,foliar-spraying Spd could effectively promote tomato seedlings growth and suppress the accumulation of ALA,PBG,URO Ⅲ and also increase contents of ProtoⅨ,Mg-protoⅨ and Pchl,and enhance the Pnvalue.These results indicated that exogenous Spd could significantly relieve the degree of transformation obstruction from UroⅢ to ProtoⅨ,promote the tomato leaf chlorophyll synthesis and increase the chlorophyll content and net photosynthetic rate and also alleviate the stress damage under saline-alkaline stress.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Saline-alkaline stress significantly decreased three chlorophyll precursors in tomato leaves.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- saline-alkaline stresse0
- Outcome
- protoporphyrin Ⅸ(Proto Ⅸ),MgProtoporphyrin Ⅸ(Mg-ProtoⅨ),protochlorophyll(Pchl)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under saline-alkaline stress,the contents of chlorophyll biosynthesis precursors-protoporphyrin Ⅸ(Proto Ⅸ),MgProtoporphyrin Ⅸ(Mg-ProtoⅨ),protochlorophyll(Pchl)were significantly decreased”
t0“tomato”
Claim · model-written summary
Saline-alkaline stress significantly accumulated ALA, PBG and Uro III in tomato leaves.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese0
- Treatment
- saline-alkaline stresse1
- Outcome
- δ-aminolevulinic acid(ALA),porphobilinogen(PBG),uroorphyrinogen Ⅲ(Uro Ⅲ)e0
- Direction
- accumulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while the contents ofδ-aminolevulinic acid(ALA),porphobilinogen(PBG),uroorphyrinogen Ⅲ(Uro Ⅲ)were significantly accumulated in leaves of tomato seedlings.”
e1“Under saline-alkaline stress”
Claim · model-written summary
Stress obstructed conversion from Uro III to Proto IX and decreased chlorophyll a, b and total chlorophyll.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- contents of Chl a,Chl b and total Chle0
- Direction
- decreasee0
- Qualifier
- transformation obstruction from UroⅢ to ProtoⅨe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was showed that stress restrained the transformation obstruction from UroⅢ to ProtoⅨand lead to decrease in contents of Chl a,Chl b and total Chl”
t0“tomato”
Claim · model-written summary
Stress reduced tomato net photosynthesis, leaf area and leaf relative water content.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- saline-alkaline stresse1
- Outcome
- Pn,leaf area,leaf relative water contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and reduced the Pn,leaf area,leaf relative water content,fresh and dry weight of shoot and root.”
e1“Under saline-alkaline stress”
t0“tomato”
Claim · model-written summary
Stress reduced tomato shoot and root fresh and dry weight.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- saline-alkaline stresse1
- Outcome
- fresh and dry weight of shoot and roote0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and reduced the Pn,leaf area,leaf relative water content,fresh and dry weight of shoot and root.”
e1“Under saline-alkaline stress”
t0“tomato”
Claim · model-written summary
Foliar spermidine promoted tomato seedling growth under saline-alkaline stress.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- foliar-spraying Spde0
- Outcome
- seedlings growthe0
- Direction
- promotee0
- Qualifier
- Under saline-alkalinestresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under saline-alkalinestress,foliar-spraying Spd could effectively promote tomato seedlings growth”
Claim · model-written summary
Spermidine suppressed ALA, PBG and URO III accumulation under stress.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- foliar-spraying Spde0
- Outcome
- accumulation of ALA,PBG,URO Ⅲe0
- Direction
- suppresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar-spraying Spd could effectively promote tomato seedlings growth and suppress the accumulation of ALA,PBG,URO Ⅲ”
Claim · model-written summary
Spermidine increased Proto IX, Mg-proto IX and Pchl contents.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- foliar-spraying Spde1
- Outcome
- contents of ProtoⅨ,Mg-protoⅨ and Pchle0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and also increase contents of ProtoⅨ,Mg-protoⅨ and Pchl”
e1“foliar-spraying Spd could effectively promote tomato seedlings growth”
Claim · model-written summary
Spermidine enhanced net photosynthetic rate.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- foliar-spraying Spde1
- Outcome
- Pnvaluee0
- Direction
- enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and enhance the Pnvalue.”
e1“foliar-spraying Spd could effectively promote tomato seedlings growth”
Claim · model-written summary
The authors conclude exogenous spermidine significantly relieves the conversion obstruction and promotes chlorophyll synthesis and content.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- exogenous Spde0
- Outcome
- chlorophyll synthesise0
- Direction
- promotee0
- Qualifier
- transformation obstruction from UroⅢ to ProtoⅨe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results indicated that exogenous Spd could significantly relieve the degree of transformation obstruction from UroⅢ to ProtoⅨ,promote the tomato leaf chlorophyll synthesis and increase the chlorophyll content and net photosynthetic rate and also alleviate the stress damage under saline-alkaline stress.”
Claim · model-written summary
Exogenous spermidine alleviates stress damage under saline-alkaline stress.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- exogenous Spde0
- Outcome
- stress damagee0
- Direction
- alleviatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous Spd could significantly relieve the degree of transformation obstruction from UroⅢ to ProtoⅨ,promote the tomato leaf chlorophyll synthesis and increase the chlorophyll content and net photosynthetic rate and also alleviate the stress damage under saline-alkaline stress.”
The same questions in other papers
spermidine · growth · Solanum lycopersicum (tomato)Results agree
8 papers in the same direction as this paper
- positive
- positive
- positive
5 papers more in this group
See all 9 papers →spermidine · molecular: metabolites · Solanum lycopersicum (tomato)Results agree
9 papers in the same direction as this paper
- positive
- positive
- positive
6 papers more in this group
See all 10 papers →salinity · physiology: photosynthesis · Solanum lycopersicum (tomato)Results differ
59 papers in the same direction as this paper · 9 in the opposite direction
- positive
- positive
- positive
65 papers more in this group
See all 69 papers →application · molecular: metabolites · Solanum lycopersicum (tomato)Positive and negative results
37 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- negative
40 papers more in this group
See all 44 papers →salinity · molecular: metabolites · Solanum lycopersicum (tomato)Positive and negative results
49 papers in the same direction as this paper · 32 in the opposite direction
- positive
- positive
- positive
78 papers more in this group
See all 82 papers →application · growth · Solanum lycopersicum (tomato)Positive and negative results
224 papers in the same direction as this paper · 26 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- negative
- negative
249 papers more in this group
See all 253 papers →salinity · growth · Solanum lycopersicum (tomato)Positive and negative results
260 papers in the same direction as this paper · 39 in the opposite direction
- positive
- positive
- positive
296 papers more in this group
See all 300 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.